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j.nme.2016.06.016.pdf | 1.16 MB | Adobe PDF | 見る/開く |
タイトル: | Deuterium retention in W and W-Re alloy irradiated with high energy Fe and W ions: Effects of irradiation temperature |
著者: | Hatano, Y. Ami, K. Alimov, V.Kh. Kondo, S. Hinoki, T. Toyama, T. Fukuda, M. Hasegawa, A. Sugiyama, K. Oya, Y. Oyaidzu, M. Hayashi, T. |
著者名の別形: | 近藤, 創介 檜木, 達也 |
キーワード: | Tungsten Tungsten-rhenium alloy Irradiation Defect Trap Hydrogen Hydrogen isotope |
発行日: | Dec-2016 |
出版者: | Elsevier BV |
誌名: | Nuclear Materials and Energy |
巻: | 9 |
開始ページ: | 93 |
終了ページ: | 97 |
抄録: | Neutron irradiation to W induces defects acting as traps against hydrogen isotopes and transmutation elements such as Re and Os. To investigate synergetic effects on radiation-induced defects and Re, deuterium (D) retention in W and W–5% Re samples were examined after irradiation with 6.4 MeV Fe ions at 523–1273 K followed by exposure to D2 gas at 673 K. The value of D retention in W–5% Re was lower than that in W by orders of magnitude after the irradiation at high temperatures (≥1073 K), while no significant effects of Re addition was observed after irradiation at 523 K. Irradiation with 20 MeV W ions at room temperature followed by exposure to D plasma at 443–743 K also resulted in small difference in D retention between W and W–5% Re samples. The results of positron lifetime measurements showed that the reduced D retention by Re observed after high temperature irradiation was due to suppression of formation of vacancy-type defects (monovacancies and vacancy clusters) by Re. |
著作権等: | © 2016 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). |
URI: | http://hdl.handle.net/2433/218608 |
DOI(出版社版): | 10.1016/j.nme.2016.06.016 |
出現コレクション: | 学術雑誌掲載論文等 |
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